Smoker&#39;s pipe



Oct. 113, 1959 w. H. DU BOIS SMOKER S PIPE Filed Sept. 4, 1956 INVENTOR.

WILLIAM H. DU BOIS FIG.6

ATTORNEY SMQIGERS PIPE William H. Du -Bois,-South Bend, Ind. Application september 4, 1956, Serial No.- 607,843 I 2 Claims. or. 131-197 The present invention relates to tobaccopipes and more particularly to an improved stem for such pipes. V

One of the principal objects of the present invention is to provide thin walled, light weight pipe stems, of aluminum or other good heat conducting metal having a series of reversed, interconnectingsmoke. passages for dissipating the heat from the smoke before it reaches the smokers mouth. 1

Another object of the invention is to provide a pipe stem of the aforesaid type whichcan readily be fabricated by. standard. metal extruding operations and: thereafter easily assembled, serviced and cleaned. 1

Still another object of the invention is to provide a pipe stem having a series of reversed interconnecting smoke passages which can be assembled withthe pipe bowl and mouthpiece with only one simple aligning operation.

A further object is to'provide a relatively simple, compact pipe stem having high smoke cooling efiiciency.

Further objects and advantages will become apparent from the following description and accompanying drawings, wherein:

Figure l is a side elevational view of a pipe embodying my invention;

Figure 2 is an enlarged, oblique partial cross sectional view of the pipe stem shown in Figure 1;

Figure 3 is a cross sectional view of my pipe stem taken on line 3-3 of Figure 1;

Figure 4 is a cross sectional view of my pipe stem taken on line 44 of Figure 1;

Figure 5 is a top plan view of the mouth piece of the pipe and a portion of the stem;

Figure 6 is an end view of the mouth piece shown in Figure 5; and

Figure 7 is a cross sectional view of my stem taken on line 7-7 of Figure 1, illustrating one stage of the fabricating operation.

Referring more specifically to the drawings, numeral 10 designates the bowl of the pipe, 12 the stem and 14 the mouth piece. For the purpose of the present description the pipe bowl may be considered a conventional wooden member having a round stem portion 16 of substantially the same size as stem 12 and a channel 17 in the bottom connecting the internal part of the bowl with a passage 18 in stem portion 16.

The pipe stem 12 which is shown in detail in Figure 2 consists of a round tubular barrel 20 having four equally spaced partitions 22, 24, 26 and 28 extending inwardly from said barrel and joined integrally with the internal surface thereof in Order to give good heat transference from the partitions to the barrel. In the fabrication of the stem, the barrel which is preferably of aluminum or other good heat conducting metal is first extruded either as sections of the desired length or as long tubes and then cut into the desired length. The extruding operation lends itself to the fabrication of a thin walled, light weight barrel which is easy to handle and which will efficiently dissipate the heat from the smoke.

The cross sectional shape of the barrel as extruded is 2,908,279 Patented Oct. 13, 1959 shown in Figure 7 consisting of the outer tubular shell with the inwardly projecting partitions 22, 24, 26 and 28, the inner ends of said partitions being spaced from one another and from the center point of the tubular shell a predetermined distance. While the barrel is in this stage, the end of one'partition, for example number 28, is machined away so that there is a substantial distance between the partition end and the respective end of the barrel. The structure formed by this operation is shown at numeral 30 in Figure 2. At the opposite end of the barrel the ends of partitions 22 and 26 are machined away so that there is a substantial distance between the ends of these partitions and the respective end of the barrel. It is thus seen that only partition 24 remains the full length of the barrel, i.'e. extending completely through the tubular portion of the barrel.

After the foregoing machining operation hasbeen com,- pleted, a tube 46 substantially the same diameter as the distance between opposed partitions is inserted into the barrel as shown inFigure 2. This tube fits snugly against the inner edges of the partitions forming an effective seal therewith andis-held firmly in place-in the center of the barrel by the partitions. When the tube has been inserted in place four well defined passages 42, 44, 46 and '48 are formed parallel with the barrel and extending substantially the full length thereof. A hole 49 of substantial size is provided inthe tube to connect the interior thereof with passage 44. The tube extends beyond both ends .of the-barrel to form extensions 50 and 52for-seating into recesses or holes inbowl 10 and mouth piece 14, respectively. Slots 54 and 56 are provided in extensions 50 and 52 to make said extensions sufl'iciently resilient to firmly grip the side walls of the recesses of the bowl and mouth piece.

When the stem constructed in the manner just described is assembled with the bowl, a heat resistant washer-like gasket 60 is slipped over extension 5i? and seated against the end of the barrel and said extension is inserted in an enlarged section of passage 18, the side walls of said extension gripping the side walls of the passage sufiiciently firmly to retain the stem in place and gasket 60 in sealing relation with the end of the barrel. A second heat resistant washer-like gasket 62 is slipped over extension 52 and seated against the respective end of the barrel, and said extension is inserted in a hole 64 in the inner end of mouth piece 14, the side wall of this extension gripping the side walls of hole 64 sufficiently to hold the mouth piece firmly on extension 52 and gasket 62 in sealing relation with the end of the barrel. The mouth piece contains a smoke passage 66 communicating with passage 42 of the stem and is aligned with the stem so that passages 42 and 66 are in communication by aligning a mark 68 on the stem with a mark 69 on the mouth piece. This is the only aligning required in assembling the pipe.

When the pipe has been assembled in the foregoing manner, the smoke from the bowl travels through channel 17, passage 18, through tube 40 and hole 49 into passage 44. The smoke then travels through the latter passage, around the end of partition 26, through passage 46, around the end of partition 28, through passage 48, around the end of partition 22 and through passage 42 and from the pipe through passage 66 in the mouth piece. It is seen that as the smoke travels through the circuitous path through the stem it travels the full length thereof five times, constantly coming in contact with the side walls of the partitions and the barrel which readily absorb the heat from the smoke and radiate it through the outer surface of the barrel. The partitions being integrally joined to the barrel readily transmit the heat to the latter from which it is readily dissipated. In order to further increase the heat dissipating characteristics of the barrel, the outside surface of the barrel is given a black coating or finish, such as a black anodized coat- When the pipe is to be cleaned, the mouth piece and bowl are merely pulled from extensions 50 and 52 and gaskets 62 and 62 are removed therefrom. Since passages 42, 44, 46 and 48 and tube 40 are straight and unobstructed, they can easily be swabbed clean with little difiiculty. Passage 66 likewise being straight and unobstructed can be readily cleaned.

While only one embodiment of the present invention has been described in detail herein various changes and modifications can be made without departing from the scope of the present invention. For example, the easily fabricated construction and efficient heat dissipating characteristics of my thin walled stem can be embodied in one having a smaller or larger number of partitions in the barrel. Further, while a barrel of extruded aluminum has been specifically referred to herein, extruded magnesium can also be satisfactorily used if desired. Other changes can be made to suit requirements.

I claim:

1. A smoking pipe comprising a bowl having a smoke passage therein, a mouth piece having a smoke passage and a closed recess therein, a thin walled barrel of aluminum with a black anodized coating thereon, a plurality of radially arranged equally spaced partitions in said barrel joined integrally with the internal surface thereof and spaced from one another at their inner ends, and a separate tube in said barrel engaging the inner ends of said partitions and having a hole communicating with the space between two of said partitions, said tube being extended beyond the end of the barrel on one end for seating in the passage of said bowl and extended beyond the end of the barrel on the other end for seating in the recess of said mouth piece, said partitions and tube defining longitudinal, parallel passages connected in series to form a continuous conduit connecting the passage in said bowl with the passage in said mouth piece, and gaskets sealing the ends of said barrel around said tube.

2. A smoking pipe comprising a bowl having a smoke passage therein, a mouth piece having a smoke passage and a closed recess therein, a thin walled barrel of aluminum, a plurality of radially arranged equally spaced partitions in said barrel joined integrally with the internal surface thereof and spaced fro one another at their inner ends, and a separate tube in said barrel engaging the inner ends of said partitions and having a hole communicating with the space between two of said partitions, said tube being extended beyond the end of the barrel on one end for seating in the passage of said bowl and extended beyond the end of the barrel on the other end for seating in the recess of said mouth piece, said partitions and tube defining longitudinal, parallel passages connected in series to form a continuous conduit connecting the passage in said bowl with the passage in said mouth piece.

References Cited in the file of this patent UNITED STATES PATENTS 

